Inner-product NMR spectroscopy: A variant of covariance NMR spectroscopy.

摘要: Abstract We propose a variant of covariance NMR spectroscopy, namely, inner-product originally suggested in Takeda (2015). The mathematical operation is the same as that NMR, except subtraction average value variable intentionally omitted, so correspondence spectrum with conventional two-dimensional Fourier-transformation established without having to request become vanishingly small. demonstrate for 13C DARR correlation experiments polycrystalline sample 13C-labeled l -alanine. In covariance, we show mixing-time dependence peaks influenced considerably by choice carrier frequency and thereby center spectrum, whereas approach free from such an undesirable effect, while keeping merit NMR.